Hi Steve, tried calling Keith on the number you posted left a couple of messages but still no reply. Do you know if he’s still in business, can you recommend any one else to service/repair bass amp (Genz Benz shuttle 6.0 & cab)

That is indeed sad news... thanks for letting us know.
I thoroughly enjoyed the time I spent with KP and have a great respect for him.
He was a great man and an excellent guitarist known by many.
He will be sorely missed.
Blessings and condolences to the Prictor family.